Ore-concentrator.



No. 845,396. PATENTBD PEB. ze, 1907. M. GHRISTMANN.

ORE CONGENTRATOR.

APPLICATION FILED APR. 19, 1906. I

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APPLIGATION FILED APB. 19. 190e. l

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M. GHRISTMANN.

URB GoNGENTRAToR. APPLICATION FILED APR. 19. 1906.

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lUNITED STATES PATENT oEEroE.

ORE-CONCENTRATOR.

Specification of Letters Patent.

Patented Feb. 26, 1907.

Application filed April 19, 1906. Serial No. 312,729.

To au whom, t may concern,.-

Be it known that I, MICHAEL OHRIsTMANN, a citizen of the United States of America, residing at Leadville, in the county of Lake and State of Colorado, have invented certain new and useful Improvements in Ore-Oencentrators, of which the following is a specification.

rI'his invention relates to improvements in ore-concentrating tables; and it resides more particularly in the means employed to support the table, which means, in coperation with the mechanism employed to impart a longitudinal reciprocating movement to the table, are instrumental in effecting a clean separation of the values contained in the comminuted ore from the gangue.

An additional object of my invention is to provide means whereby the transverse inclination of the table may readily be adjusted and without interfering` with the arrangement of the connecting parts of the operating mechanism or movement.

I attain these objects by the mchanism illustrated in the accompanying drawings, in the various views of which like parts are similarly designated, and in which- Figure 1 represents a side elevation of the apparatus; Fig. 2, a plan view of the bedframe and table-supports, the table, water, and discharge-troughs having been shown in broken lines; Fig. 3, an enlarged transverse section along a line 3 3, Fig. 1; Fig.4, an enlarged section along a line 4' 4, Fig. 3; Fig. 5 a section along a line 5 5, Fig. 4; Fig. 6, an enlarged section along a lineV 6 6, Fig. 3; Figs. 7 and S, sections along a line 7 7, Fig. 3, showing opposite positions of the rockers; and Fig. 9, a horizontal section along a line 9 9, Fig. 5; Fig. 10, a fragmentary plan view of the movement end of the frame and the table; Fig. 11, afront eleva-tion of the movement; Fig. 1 2, an enlarged vertical section taken along a line 12 12, Fig. 11; Fig. 13, an enlarged view of the upper extremity of the operating-lever; Fig. 14, an enlarged section along a line 14 14, Fig. 3; and Fig. 15, an elevation looking from a point a, Fig. 14, the

land-wheel omitted.

Referring to the drawings, 10 represents a suitable stationary bed or base-frame comprising the longitudinal beams 11 and the cross-timbers 12, securely bolted together to form an adequate support for the table and operating mechanism.

13 is the concentrator-table mounted in superposed relation to the base-frame and comprising the preferably riflied deck 13, the supporting-girders 13C, and cross-timbers 13d. A longitudinal vibrating orreciprocating movement is imparted to the table by means of a suitable mechanism 14, mounted at the extreme end of the bed and comprising a horizontal shaft 15, revolubly mounted in j ournal-boxes 15a and provided with a mulitple cam or wiper wheel 16, which in practice engages an antifrictionwheel 17a in the lower arm of a verticallydisposed lever 17, fulcrumed at 18 in a standard 19. The extremity of the upper arm of lever 17 is connected with the adjacent end of the table by a ball-and-socket joint 50, the

female member 51 of which has a iiange 51a,

which is secured to the end of the table by means of bolts 52. The male member 53 is semispherical in shape and adapted to occupy a similarly-shaped recess 51c in member 51. It is provided with an integral downwardlyextending arm 54, the lower extremity oi' which is pivotally secured to the upper arm of lever 17 by a bolt 55. The two members are furthermore secured to the lever by a bolt 56, which extends through a curved slot 17c in the upper extremity of the lever and through centralbores 53EL and 51d, which, being diametrically larger than the bolt, permit lateral movement of the respective members 53 and 51.

The extreme end of the lower arm of lever 17 is provided with a headed rod 21, which' extends through an aperture 2O in the end cross-timber 12a of the frame. A nut 21aL on the outer extremity of the rod engages a spiral spring 22,the other end of which is in contact with the surface of timber 12a and which, being compressed during forward movement of the table, is instrumental in returning it to its normal position.

Table 13 is movably supported on two pairs of normally vertically extending independent wedge-shaped rockers 23, the lower extremities of the downwardly-diverging sides 23a of which form feet which normally rest in individual V-shaped seats 24a in dies 24, mounted on the stationary frame, while their vertices 23C occupy correspondinglyshaped seats 25 in the opposite extremities of metal bars 26, which are transversely secured along the under side of the table by means of bolt-s 27.

Dies 24 are preferably located in the outer extremities of two yparallel curved cross-bars IOO 28, pivotally mounted transversely of frame 10 in chairs 29, which are rigidly secured on the cross-timbers 12. Arms 2S are furthermore provided with downwardly-extending central lugs 30, which in practice project loosely through openings in the bottom ot chairs 29 and insure against the formers lateral and longitudinal displacement. Bars 2S being thus pivotally mounted in the chairs aiord means to adjust the transverse inclination of the superposed table. Their outer extremities are during their arcuate movement guided in standards 31, secured to the stationary frame 10 and each composed of a bed-plate 32 and the therewith integral guides 33, in between which the die-bearing extremities of the curved arms extend.

The transverse inclination of the table is varied by raising or depressing the corresponding extremities of the two bars 23, which to this end are provided with pivotallysecured depending segmental racks 34. A longitudinally-disposed shaft 35 is rotatably mounted in ears 36 on the corresponding standards and is provided with pinions 37, which engage the toothed edges ot' the racks. Guide-rollers 38, rotatably mounted in ears 39 on guides 33 opposite the pinions, are intended to insure the constant engagement of the latter with the racks. `When shaft 35 is rotated, which may be accomplished by means of a hand-wheel 40, pinions 37, engaging the racks, will cause the curved arms to move about their pivots and the transverse inclination of the superposed table is changed in consequence.

Gravity-impelled dogs 57, pivotally secured at 5S to one of the guides 33, normally engage the teeth of the pinions 37 to maintain the table in the inclined position. They are preferably provided with outwardly-extending handles 57a to facilitate their being thrown out of engagement while the inclination of the table is being adjusted.

41 designates a toraminated water-trough arranged to supply water along the upper surface of the table and secured to the adj acent extremities of the curved arms 28 by means of bent bars 42, while troughs 43 and 44, located along the opposite or discharge side of the table, are intended to receive the gangue and silica discharged therefrom.

The deck of table 13 is preferably longitudinally divided into a plain portion A and a longitudinally-rifHed portionB, while its end adjacent to the movement is inclined to direct the material fed onto the plain portion A through a suitable trough 45 toward the discharge side. The table is held against lateral displacement by means of stops on bars 26, which engage adjacent portions of arms 2S. The table may be strengthened by means of metal plates 13e placed alongside the girders 13C and secured thereto by bolts 13F.

Having thus described the mechanical construction of the device, its operation is as follows: The pulp is fed onto the upper or movement end of the table through a suitable trough or spout 45 and the matter separated by reason of the vibratory movement of the table, which causes the heaviest and most valuable particles of ore to move along the deck to be discharged at its lower end, while the lighter matter, aided by the water supplied from trough 41, will 'flow over the rii'lled portion of the table, the ri'H-les on which progressively catch the heavier particles and guide them to the discharge end of the table, while the lighter matter or gangue `falls into launder 43. During the reciprocating movement of the table imparted thereto by the operating mechanism 1.4 the oscillating wedge-shaped rockers 23 will alternately engage the seats 24@L in dies 24, as

I illustrated in Figs. 7 and S. This action not only imparts an arcuate movement to the table, but each time one of the Afeet of the rockers comes in contact with its individual seat in the corresponding dies 24 a violent concussion is imparted to the deck and the matter deposited thereon, with the result that the pulp, besides being subject to the longitudinal arcuate vibratory motion of the table, is `furthermore influenced by a rapid vertical concussive action, which constraining the material to move upwardly will cause the fine values, which under ordinary circumstances low away on top of the gangue, to precipitate and be saved in consequence. The two motions combined will thus greatly increase the efliciency of the apparatus and result in a perfect and clean separation of the values from the matrix.

The means for adjusting the transverse in- .clination of the table adapts it to treat varying kinds of ore, and the movable connection between the table and the lever 17 of the movement will by automatically adjusting vitself to the varying position of the table prevent strain and consequent breakage of the lever and warping of the deck.

Having thus described my invention, what I claim is;

l. The combination with a stationary bed or base-frame and a concentrator deck or table having a longitudinal, vibratory movement thereon, of wedge-shaped rockers interposed between the table and the frame, their vertices engaging the former while the extremities of their diverging sides engage seats on the stationary frame said rockers being independent of both the stationary frame and the concentrator-deck.

2. The combination with a stationary traine and a concentrator table or deck movably mounted thereon, of a plurality of interposed rockers of inverted-V shape engaging the latter and having'a recess at the lower ends forming two feet arranged to alter- IOO IIC

rockers being independent of both the sta-` tionary frame and the concentrator-deck.

3. The combination with a stationary frame, a concentrator deck or table movably j frame Vhaving recesses therein, chairs on sa1d mounted thereon, said deck or table having recesses on its bottom forming seats, and the frame-carrying recesses also forming seats, said recesses n the frame being arranged in pairs and wedgewshaped rockers each having a pair of feet at its wide end which engage in a pair of recesses on the 'frame while the narrow end of said rocker engages with a recess on the table said rockers being independent of both the stationary frame and the concentrator-deck.

4. The combination with a stationary frame and a concentrator-table having a longitudinal movement thereon of curved arms pivotally mounted transversely of the frame each of said arms having a pair of recesses at the outer end thereof and a wedge-shaped rocker between the outer end of each arm and the table, each rocker having a pair of feet at its wide end,.engaging with the pair of recesses and the upper narrow end of the rocker engaging with the bottom of the table.

5. The combination with a stationary frame and a concentrator-table, of curved arms pivotally mounted on the frame, a die mounted in the outer end of each arm, each die having a pair of recesses therein, transverse bars secured to the bottom of the table, each of said bars having a recess at its outer end, and wedge-shaped rockers each having feet at its lower wide end engaging with the pair of recesses in the die and its narrow upper end engaging with the recess in the bar.

6. The combination with a stationary Jframe, curved arms resting in said chairs and having projections engaging with the recesses to hold the arms in place, rockers mounted at the extremities of the arms, a concentrator-table mounted on said rockers an upright standard on the frame on each side of the extremities of the arms to guide said arms and means for giving said table a longitudinal reciprocatory movement.

7. The combination with a stationary frame and a concentrat-or deck or table adjustably and movably mounted thereon, of a vertical lever fulcrumed on the frame, a shaft having a multiple cam engaging the lower arm of the lever, a socketed projection on the table, an arm pivotally mounted on the upper arm of the lever and having a semispherical head arranged to occupy the socket in the projection, and a bolt extending through central apertures in the head and in the projection and through a segmental slot in the lever.

In testimony whereor` I have aiXed my signature in presence of two witnesses.

v MICHAEL CHRISTMANN.

Witnesses:

A. G. VERHoFsTAD, LLOYD HARRISON. 

